Mobile remote sensors

In addition to the fiber sensors, there have been numerous reports on remote fiberless optical detection of pollution from stationary sources. Mobile remote sensors can have cost advantages over on-site instruments and also are much more versatile. Pollutants in smokestack emissions have been identified by irradiation with a laser from a mobile unit equipped with a telescope, a monochromator, and low-noise detection electronics. The gases and particles in the plume scatter the laser light in various directions. A fraction is scattered back to the receiver and analysed to detect the amount and type of gas in the plume. Many of these methods await their application to fiber-optic sensing schemes which are inherently safer than direct laser spectroscopic schemes. 

Remote sensor studies have also been effective in identifying the problems of superemitters, that is, cars that have extremely high emissions. It has now been shown in a variety of studies that a small fraction of automobiles account for a large fraction of the total mobile source emissions of both CO and hydrocarbons. For example, during studies in Utah and in California, approximately 10% of the vehicles were found to be responsible for 50% of the CO emissions as well as 50% of the on-road hydrocarbon emissions some ( 5%)were super-emitters for both pollutants (Bishop et al., 1993 Stephens, 1994 Beaton et al., 1995). Similarly, remote-sensing studies in Mexico City showed that 12% of the fleet was responsible for half of the hydrocarbon emissions and 24% of the fleet produced half of the CO emissions (Beaton et al., 1992). 

A self-contained system, which integrated the remote carbon-fiber electrochemical sensor with a voltammetric analyzer and a wireless communication system, was described by Fu et al. [21]. The mobile remote underwater systems were applied for field measurements of explosive residues in marine environments. 

Evaluation of a Remote Sensor for Mobile Source CO Emissions U.S. Environmental Protection Agency, 1990, EPA/600/S4-90/032. 

Improved sensors allow computer monitoring of the system for safety and protection of the equipment from damage. Sensors include lubrication-flow monitors and alarms, bearing-temperature sensors, belt scales, rotation sensors, and proximity sensors to detect ore level under the crusher. The latter prevent jamming of the output with too high an ore level, and protect the conveyor from impact of lumps with too low an ore level. Motion detectors assure that the conveyor is moving. Control applied to crusher systems including conveyors can facilitate use of mobile crushers in quarries and mines, since these can be controlled remotely by computer with reduced labor. 

Two of the primary applications for wireless data communications systems are to enable mobile or remote connections to a LAN, and to establish wireless communications links between SCADA remote telemetry units (RTUs) and sensors in the field. Wireless card connections are usually used for LAN access from mobile computers. Wireless cards can also be incorporated into RTUs to allow them to communicate with sensing devices that are located remotely. 

Turnaround time for training on novel odors Capable of remote guidance and mobile platform for other sensors Initial cost Annual cost... 

Grunawalt 2005, p. 109, takes the view that the Ukelihood that a hospital ship would be employed to collect and promulgate military intelligence in this age of satellite sensors, over-the-horizon radar, and fixed and mobile long-range hydrophones is extremely remote it strains the imagination to conjure up a scenario where it would have any utility whatsoever. ... 

Hungary Chemical Agent Sensor GVJ-2 - Ion mobility spectrometric detection of nerve and blister agents Remote Chemical Agent Sensor VTB-1 - Field deployable laser radar for the detection of chemical warfare agents... 

A typical wearable body sensor network consists of multiple types of biomedical sensors and gateway (eg, smartphone or other mobile devices) that can aggregate the data from the sensors and transmit them to remote control servers or cloud. Especially for the textile-based wearable sensors, the sensors might have limited wireless... 

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